class Student{
    constructor(){
        //定义一个行为
        this.play = function(){
            console.log("play");
        }
    }
    show(){
        console.log(1);
    }
}

const stu1 = new Student()
const stu2 = new Student()

console.log(stu1.__proto__);
const pro = stu1.__proto__.__proto__
console.log(pro.toString());
console.log(pro.__proto__);

// console.log(stu1);
// console.log(stu2);

// console.log(Student.prototype);
// console.log(stu1.__proto__ === stu2.__proto__);
// console.log(Student.prototype === stu1.__proto__);


